Professor Richard Gregory died a few days ago. Richard carried out a great deal of work into the psychology of illusion, and his wonderful book, Eye and Brain, is responsible for sparking my interest in perception and deception. Early on in his career he came across a cafe in Bristol with a pattern of tiling that produced a striking illusion (details here), and so I thought it would be nice to use the image to produce a small tribute to the great man……
If you haven’t figured it out, the lines in the illusion appear sloping but are actually parallel.
Here is Richard in action explaining another wonderful illusion…..
Are you a fan of his work?